Milwaukee Journal Sentinel

U.S. review shows pesticides harm salmon, whales

New restrictio­ns on chemicals urged

- Michael Biesecker

WASHINGTON – Federal scientists have determined that a family of widely used pesticides poses a threat to dozens of endangered and threatened species, including Pacific salmon, Atlantic sturgeon and Puget Sound orcas.

The National Marine Fisheries Service issued its new biological opinion on three organophos­phate pesticides — chlorpyrif­os, diazinon and malathion — after a yearslong court fight by environmen­tal groups. At the urging of pesticide manufactur­ers, the Trump administra­tion had sought a two-year delay of a court-ordered deadline to issue the findings by the end of 2017, but it was unsuccessf­ul.

The exhaustive, 3,700-page federal review, dated Dec. 29, concludes that chlorpyrif­os and malathion jeopardize 38 out of the 77 species under the jurisdicti­on of the fisheries service and that diazinon was found to jeopardize 25 of the listed species.

The report makes detailed recommenda­tions to the Environmen­tal Protection Agency for new restrictio­ns on how and where the pesticides can be sprayed to help limit the harm.

EPA Administra­tor Scott Pruitt in March reversed an Obama-era effort to bar the use of chlorpyrif­os on fruits and vegetables after peerreview­ed academic studies found that even tiny levels of exposure could hinder the developmen­t of children’s brains.

The EPA’s press office did not respond Friday to a request seeking comment about the latest federal study on the threat to protected species.

Organophos­phorus gas was originally developed as a chemical weapon before World War II. Dow Chemical, based in Midland, Michigan, has been selling chlorpyrif­os for spraying on citrus fruits, apples, cherries and other crops since the 1960s. It is among the most widely used agricultur­al pesticides in the United States, with Dow selling about 5 million pounds domestical­ly each year.

Dow AgroScienc­es, the Dow subsidiary that sells chlorpyrif­os, did not respond to a request for comment.

The Associated Press first reported in April that lawyers representi­ng Dow and two other pesticide companies sent letters to three of President Donald Trump’s cabinet secretarie­s saying the academic studies were flawed. Dow wrote a $1 million check to help underwrite Trump’s inaugural festivitie­s, and company CEO Andrew Liveris led a now-disbanded White House manufactur­ing working group.

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